Classificar as reações de acordo com as substâncias participantes:
1- CaCO -CaO + CO2
2- SO3+H2O - H2SO4
3- Fe+ ZnSO4 - FeSO4 + Zn
4- HNO3 + KOH - KNO3 + H2O
5- O2 + 2 F2 - 2 OF2
6- HCl + NaOH - NaCl + H20
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